Bullion, proof and uncirculated explained
| Term | What it means | Typical value driver |
|---|---|---|
| Bullion | Mass-produced gold coin that trades close to its gold value | Gold weight and purity, tracking the live market |
| Uncirculated (UNC) | Bullion finish, never put into circulation, unworn | Mostly bullion plus a small premium |
| Brilliant Uncirculated (BU) | A higher-finish version of UNC with sharper detail | Bullion plus a modest premium |
| Proof | Specially struck with a mirror finish, sold in presentation packaging | Often a significant premium above bullion |
| Reverse Proof | Mirror background, frosted device, rarer than standard proof | Premium above bullion, sometimes substantial |
| Circulated | Coins that were used as money | Bullion only, sometimes a small numismatic premium if early |
Why proof and BU coins are not the same
Both look mint-fresh. A proof is struck twice from polished dies onto a polished blank, giving a mirror-like field and frosted device. A Brilliant Uncirculated coin is struck once from polished dies onto a normal blank. Visually proofs are sharper; commercially, proofs typically sell above bullion, BU sometimes does, UNC bullion rarely does beyond a small premium.
The condition ladder collectors use
Auctioneers use Sheldon-derived grades (Poor, Fair, Good, Very Good, Fine, Very Fine, Extremely Fine, About Uncirculated, Mint State 60 to 70). UK seller guides typically use Fine, Very Fine, Extremely Fine, About UNC, UNC. For scrap, none of this matters, the gold content does. For a coin that might be worth more than scrap, condition is the second variable after rarity.
When a coin is worth more than its gold content
Modern bullion (post-decimal sovereigns, Britannias, Krugerrands, Maple Leafs) is mostly priced by gold content, and that content is fixed by specification: a full sovereign is 22ct (916.7 fine) at 7.98 g gross, so it always contains 7.32 g of fine gold; a half sovereign carries 3.66 g; a one-ounce Krugerrand, also 22ct, carries a full troy ounce (31.10 g) of fine gold in a 33.93 g coin. Older sovereigns (especially pre-1900) in genuine Extremely Fine or better, scarce dates (e.g. some 1873 Sydney issues, low-mintage Empire mints), proofs, and presentation-pack sets often clear bullion comfortably. If you have a coin you think might fit, send a photo of both sides before sending the coin itself.
What we do
Common bullion sovereigns and Krugerrands trade close to their gold value on the open market, while scarcer dates, mint marks and proofs can be worth more to a collector. Send a photo of both sides on WhatsApp first and we will tell you how we would value yours before you post anything, and whether a specialist auction would suit it better. There is no charge for that view.
Common questions
Is a Proof sovereign worth more than a regular sovereign?
Usually, yes, sometimes substantially. The exact premium depends on year, mintage and condition. Send a photo before posting.
Does a scratch ruin the value of a gold coin?
On a bullion coin sold for gold, no, only the weight matters. On a collector coin, yes, surface marks drop the grade and the price.
Should I get my coin graded by NGC or PCGS first?
Only worthwhile on coins where the grading fee makes commercial sense, typically scarcer or higher-grade pieces. For everyday sovereigns, third-party grading rarely pays for itself.
Not the question you had? The full GoldPaid FAQ covers the rest, from postal cover and ID checks to what happens if you decline the offer.
Speak to us before you post
Please send us photos on WhatsApp, and we will help you. We give an instant estimate where possible and arrange postage with you after our conversation. Your final offer follows inspection.